<div class="form-group has-success">
  <label class="control-label" for="inputSuccess1">Input with success</label>
  <input type="text" class="form-control" id="inputSuccess1">
</div>
<div class="form-group has-warning">
  <label class="control-label" for="inputWarning1">Input with warning</label>
  <input type="text" class="form-control" id="inputWarning1">
</div>
<div class="form-group has-error">
  <label class="control-label" for="inputError1">Input with error</label>
  <input type="text" class="form-control" id="inputError1">
</div>
<div class="form-group has-success has-feedback">
  <label class="control-label" for="inputSuccess2">Input with success</label>
  <input type="text" class="form-control" id="inputSuccess2" aria-describedby="inputSuccess2Status">
  <span class="form-control-feedback">
    <ion-icon class="icon" name="checkmark-circle"></ion-icon>
  </span>
  <span id="inputSuccess2Status" class="sr-only">(success)</span>
</div>
<br>
<div class="form-group has-warning has-feedback">
  <label class="control-label" for="inputWarning2">Input with warning</label>
  <input type="text" class="form-control" id="inputWarning2" aria-describedby="inputWarning2Status">
  <span class="form-control-feedback">
    <ion-icon class="icon" name="alert-circle"></ion-icon>
  </span>
  <span id="inputWarning2Status" class="sr-only">(warning)</span>
</div>
<br>
<div class="form-group has-error has-feedback">
  <label class="control-label" for="inputError2">Input with error</label>
  <input type="text" class="form-control" id="inputError2" aria-describedby="inputError2Status">
  <span class="form-control-feedback">
    <ion-icon class="icon" name="close-circle"></ion-icon>
  </span>
  <span id="inputError2Status" class="sr-only">(error)</span>
</div>
<br>
<div class="form-group has-success has-feedback">
  <label class="control-label" for="inputGroupSuccess1">Input group with success</label>
  <div class="input-group">
    <div class="input-group-prepend">
      <span class="input-group-text input-group-addon addon-left">@</span>
    </div> 
    <input type="text" class="form-control" id="inputGroupSuccess1" aria-describedby="inputGroupSuccess1Status">
  </div>
  <span class="form-control-feedback">
    <ion-icon class="icon" name="checkmark-circle"></ion-icon>
  </span>
  <span id="inputGroupSuccess1Status" class="sr-only">(success)</span>
</div>
